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(E4) Holy Island (1:50,000/SwD)

(E4) Holy Island  (1:50,000/SwD)

A geological map of Holy Island, a also known as Lindisfarne, and its surrounding areas

Holy Island and the nearby Farne Islands are primarily formed from the rocks of the Whin Sill Complex. This complex consists of quartz-dolerites or quartz-microgabbros, dating back to 301 to 294 million years old.

The geology is further enhanced by two outcrops of the Whin Sill Complex. The Heugh, located just south of Lindisfarne Priory, presents an intriguing contact between the igneous rock of the dyke and the surrounding limestone rocks of the early Carboniferous Alston Formation, rich in fossils like brachiopods and orthocones.

The northern part of the island is also formed from the Alston Formation, known for its purity and historical use in quicklime production.

The original geological survey was published on Sheet 110 SE, Old Series in 1890 and was re-surveyed by R.G. Carruthers, District Geologist, C.H. Dinham, G.A. Burnett, A. Fowler from 1921-1923.

Price: 13.00